Named Bon Appétit’s Ingredient of the Year for 2010, the piquant pureé of chili peppers is one of the few kitchen standbys adored by adventurous cooks of all stripes—from star chefs to college freshmen—who appreciate its vibrant, versatile balance of ketchup-like sweetness, garlicky pungency, and just the right amount of spice. Whether you’re a die-hard fan or a recent convert to the revered “rooster sauce,” you’ll love adding heat, depth, and an intriguing Southeast Asian twist to your dishes beyond just a tableside squeeze.